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This conspiracy theory, which many believe to be true, is based on the belief that Adolf Hitler was able to flee the city of Berlin in 1945 with the help of his wife, Eva Braun. Although not taken seriously by historians, this theory has only gained traction since the advent of the internet, a breeding ground for speculation and suspicion.

In this gallery, you'll get to know the theory in detail. Click through and dive in.

▲The theory states that, instead of killing himself on April 30, 1945, the dictator escaped Germany along with his wife, Eva Braun, and went to Argentina, where he lived for the rest of his life.

▲In 2011, authors Simon Dunstan and Gerrald Williams explored the untold story of Hitler's possible escape from being captured by the Soviets. The book is called 'Gray Wolf: The Escape of Adolf Hitler.'

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Allegedly, several submarines left Germany for Argentina at the end of World War II. This is because the future president of Argentina, Juan Perón, had received money from the Nazis for his campaign and was now returning the favor.

▲According to the book, the dictator and his wife boarded one of these submarines and hid in a house in Nahuel Huapi Lake, near the Argentinian border with Chile.

▲According to the authors, Eva Braun left Hitler and went to Neuquén with their daughter, Ursula. Hitler allegedly died in February 1962.

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A skull fragment with a bullet hole was found outside Hitler's bunker and was kept in Russia's federal archives in Moscow. Many believed that this skull was Hitler's, but in 2009 a DNA test revealed that the fragment belonged to a 40-year-old woman.

▲However, this fragment was never seen as a crucial evidence to confirm or deny Hitler's death. There are more fragments like the jaws, along with some of the dictator's teeth, which were analyzed by Hitler's dentist, a dental assistant, and a specialist. All of them confirmed that the evidences belonged to the Fuhrer.

▲FBI documents that have been analyzed in recent years and marked as unclassified, contain several records of alleged Hitler sightings. However, the FBI states that the information contained in these documents holds no conclusive evidence.

▲Several historians believe that this theory may have been spread several years ago by the Soviet government. The policies of disinformation sponsored by the Soviets is well known, and this time, historical records indicate that it was Marshall Georgy Zhukov who propagated the myth on June 9 1945 at a press conference, under Stalin's orders.

▲To help spread the myth, at the Potsdam conference after World War II, Stalin told US President Harry S. Truman that Hitler was alive. This allegation gave birth to several conspiracy theories.

▲After all the confusion over the dictator's death, Dik White, then Head of the Secret Intelligence Service in the British section of Berlin, sent agent Hugh Trevor-Roper to investigate Hitler's death. His first report, which was later published in a book in 1947, shows that in 1946 the agent had already found enough evidence to declare Hitler dead.

▲Many historians are completely against this theory and often classify it as nonsense and without any substance.

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Guy Walters is one of the historians who made his opinion about the theory public. He stated that it was an absolute disgrace, that there was no substance to support it, and that it was a theory which only appealed to the deluded fantasies of its conspirators. You can read the historian's opinion in this Daily Mail article.

▲In 2014, the authors of the controversial book 'Gray Wolf: The Escape of Adolf Hitler' also made a documentary on the subject, produced by one of the authors, Gerrard Williams.

▲In this documentary, several people claim to have seen Hitler in Argentina over the years.

▲The documentary received mixed reviews, but it was criticized for allegedly being funded by a financial corruption scheme.

▲The History channel has launched a series called 'Hunting Hitler,' where several investigators, who believe in Hitler's escape to South America, travel the continent in search of evidence and documents to prove the theory.

▲It is revealed in this series that while allegedly living in South America, Hitler and other Nazis plotted a fourth Reich.

▲The book 'Hitler in Brazil - His life and His death,' by the Brazilian writer Simoni Renee Guerreiro Dias, points to the hypothesis of the dictator having moved to Brazil, where he eventually died.

▲The dictator would have managed to escape to Argentina with the help of friends he had in the Vatican and would have changed his name to Adolf Leipzig.

▲The researcher found a photo in the state of Mato Grosso, where she lives, of a man who she says looks very much like Hitler. She believes that he died in the city of Nossa Senhora do Livramento in 1984 at the age of 95.

▲The photo shows an elderly man with his black female partner. Simoni Dias claimed that this was part of Hitler's disguise because no one would think he would get involved with a woman who was not Caucasian.

▲According to the investigator, Hitler was known in the city as the 'old German.'

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In her book, Simoni Dias also mentions an account of a nun who survived the Holocaust and had felt sick on recognizing Adolf Leipzig as Hitler, when he was admitted to the hospital where she worked in 1979.

▲Many criticize the photograph discovered by Dias for two reasons: one, it is old and seems manipulated, and two, it was discovered by her at a time when she was trying to sell the book she had written about Hitler.

▲Simoni Dias was given permission to analyze Adolf Leipzig's body and collect DNA samples to be compared with those of a descendant of Hitler's. However, to date, no results have been made public.

▲The story that most historians accept as true is that the dictator took his own life in the bunker with a gun and cyanide poisoning.

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Some historians also believe that Hitler's death was caused during an air strike directed at his bunker that occurred at the end of World War II.

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Which theory do you believe? Do you think there is enough evidence to assume that Hitler survived?